Was today the anniversary of a famous invention?
Checking
NO
No — nothing world-changing got patented on this date; October 27 is more of a politics-and-disasters day.
Why
- 1904: NYC subway opened — infrastructure, not quite an invention
- 1994: Gliese 229B, first confirmed brown dwarf, identified
- 2004: Red Sox won the World Series, ending the Curse